Police in Croatia have denied illegally pushing migrants back across the border into Bosnia-Herzegovina. The statement by authorities contradicted a report by the Border Violence Monitoring group on Sunday that said officers had, sometimes violently, forced the refugees back outside the external borders of the European Union.

The group cited footage provided to them by anonymous sources, taken from cameras hidden in a forest that straddles the border between the two countries. It shows Croatian police shouting at a group of migrants and escorting them back over the border.

Read more: Yugoslav wars: A home for forgotten refugees

Winter threat

This isn't the first time Croatia has denied that this practice occurs. The government has said police were not shoving the refugees back, but rather "deterring" them from using what they said was an unofficial crossing point.

Aid groups have voiced concern that the bitter winter weather could have serious health consequences for migrants forced to camp out at border zones. Bosnian officials said Sunday that they had rescued two people from the border area and treated them for severe frostbite.

More than 3,000 people have been cramped into three makeshift refugee centers in the towns of Bihac and Velika Kladusa, near the Croatian border. Authorities in Bosnia have struggled to provide sufficient accommodation and food.

es/cmk (AP, dpa, Reuters)

Each evening at 1830 UTC, DW's editors send out a selection of the day's hard news and quality feature journalism. You can sign up to receive it directly here.